61918774 has 8 divisors (see below), whose sum is σ = 95143608. Its totient is φ = 30204240.

The previous prime is 61918771. The next prime is 61918807. The reversal of 61918774 is 47781916.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 61918774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61918771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377472 + ... + 377635.

It is an arithmetic number, because the mean of its divisors is an integer number (11892951).

Almost surely, 2^61918774 is an apocalyptic number.

61918774 is a deficient number, since it is larger than the sum of its proper divisors (33224834).

61918774 is a wasteful number, since it uses less digits than its factorization.

61918774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755150.

The product of its digits is 84672, while the sum is 43.

The square root of 61918774 is about 7868.8483274238. The cubic root of 61918774 is about 395.6162447327.

The spelling of 61918774 in words is "sixty-one million, nine hundred eighteen thousand, seven hundred seventy-four".